That was actually pretty easy to do, if I understood your question correctly.
Damage response - Chance: 1
Damage response - Minimum: 1
Damage response - Modify Amount: 10
Maximum Stack Count: 5
Maximum Stack Count per Caster: 5
Duration: 100 (this is optional, put whatever duration you want)
Apply Behavior effect
I have attached the map in which you can see the result and export it.